Locking device for internal-combustion engines.



L. J. KNIEL. LOCKING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN. 28,1914.

Patented Sept. 1, 1914.

2 SHBETS-SHEET 1.

L. J. KNIEL,

LOOKING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN. 28, 1914 1,108,995 Patented Sept. 1, 191.4.

2 SHEETS--SHBET 2.

m M Q 9W. WMW f w Attornay.

.tem zammgm nnrnorr, MICHIGAN.

. nnv cnron inrnnnansco'nnns rron ENGINES.

' citizen of the United States, residing at 143 ,Heniyj streetaj.Detroit,"in the county of 5*Wayne-Q and State of Michigan, have inventj i v iuidlusefuIImprovenients Locking Devices for. Internal-Combustion ".ed certain n'e.

Engines; of which "the-following is a speci- This"inventionyrelates m hand-operated locking de vices. for internal combustion en-;

g'inesi and 'p'e w y desig ed to" Provide' a simple and effective device-for readily disengaging certain operating parts *of a 3 gas engine, ,andk'locleing them in an inoperative position hy 'gaj hand-operated means,-'

vvhich locking ineans can be manipulated to.

. restore the engine parts to operativeposition,"0nly' y aners'o'n. who knows the'com-i -.20 {bination oi the locking elements jised Numeroils thefts of automobiles, motorcycles, motorboats, .etc., vvhere the thieves chievouspersons. A U

This invention not 1 only provides a lock: ing devieewhich will-positively prevent the unauthorized operation of the engine but: also allows'a vehicle provided'w lth .the en-' gine in locked position to be 'pushed or pulled-"(by power otherthan its eng ne) out of danger in case of fire or accident or Whenever a change of pos1t1on- 1s.des1rable 40 in the garage or in the street.

This invention also provides an effective and safe locking device without in any-way I affecting the adj ust'me'rit' of the engine valves,

the timing of the spark mechanism, clutches, es brakes, gears; 'etc-., 'but allows all 'ad ustments to remain in any desired position l l shaft and this master-gear so that whenthe engine is;;ope ratingthe master-gear will rotated by the crank shaft to accomplish-its While-the engine lisjin locked position.

A further object of this invention is to provide a siniple and efiective-loclnng de- 1 vice that can bejattachedto ..enginesof Well lmofwn types and of {Various sizes, and can be'secur'ed to various shatts of the e'n e, as, for example, to thecrank-shatt, the timing shaft, the shaft, etc.

invention resides in the combination and arrangement of elements hereinafter described, I illustrated in the accompanying drawings,

and particularly pointed'out in the appendedclaims."

In thed rawings, l-i s alongitudinal sectional viewthrough the locki device in 'lVith'these and otheriobjects view, the

r-p'ositi'on on an engine shaft,show1ngthe elej fments 1n the position assumedvvh'en ,the engine is operating. Fig. 2'is ags'ide elevation of. the locking device, with a portion broken away'and in section,- showing the device in .position. on the crank shaft of an engine, and the elements in the position assumed jwhen the engine, is in an inoperative position. Fig. -3' is adetail elevation of one of the permutationtumbler locking rings, and,

Fig. 4: is 'a side elevation of the inner sleeve 'coactingwith the permutation tumbler locking rings,'the view being taken at right anglesto the view shownlin Fig. 1. y

In thedrawings, I designates a shaft of an internalcombustion engine to which the locking device is attached and may be the' crank-shaft, cam-shaft," timing" shaft, etc., of

-the engine. The locking device has been found to be particularly practicable, however on the crank-shaftof the engine, and is shown as connected thereto in Fig. 2,0f the drawings, this crank-shaftbeing designated by the numeral 1 The numeral 2 designateslithe 'niaster-gear of the engine, 71. 6., the gear'jcarried by the crank-shaft which interm'shes with and acj tuates' the gears which control the 0pening.' o

and closing of the inlet and outletvalves', the

timing of the spark mechanism, etc., and the primary feature ofthis invention, as illustrated in Fig.9 is to providea hand opem locking connection between the crank position where the rotation of the ,cranl' shaft will not affect the position of the mas ter gear, In other words, the master gear would then be loose upon the crank-shaft, and while the crank-shait may be rotated by other forces than the engine, as by a startdriver to turn this master; gear. ever, this key or projectlon will serve ing device or through the transmission mechanism when the vehicle is moved to a dilierent place, this movement of the crank-shaft will not turn the master-gear to open and close the engine valves, etc, and accordingly, the engine will not operate.

The hand-operated locking device forming the connection between. the crank-shaft and the master gear comprises a pulley 3 formed of two oppositely disposed pulley sec-tionse each keyed to the crankshaft and having oppositely disposed grooves 5 which together form a central annular groove for the reception of the shank 6 of the mastergear 2. The shank 6 fits looselywithin the grooves 5 and is provided with a key-way or slot 8 adapted to aline with a similar key-way or slot 7 in one of the pulley sections 4; for the reception of a slidable key or projection 9, carried at one end of the outer sleeve 12 mounted upon an intermediate sleeve 13 which in turn. is slidably mounted on an innersleeve 14 which is positi vely connected at one end to the collar 4'? of the pulley section a, so that the rotation -of the pulley'section l keyed .to the crank-shaft I to rotate the inner sleeve 14 connected thereto, and through connecting mechanism hereinafter described the inner sleeve 14 will rotate the intermediate and outer sleeves13 and 1.2respectively to revolve the master gear, the key or projectipn 9 carried by the. outer sleeve 12 acting-as a- 9 is slid out of the key-way or slot 8 in the master gear, it will be apparent that the master gear will not be rotated,.but will remain in stationary position loose upon the pulley sections 4:.

The inner sleeve 1 L has one end secured to thecollar 4* of the pulley by set screws, screw-threads, or other suitable means, and at the other-end is-provided with" an upstanding flange 15, while a portionof the. periphery of this sleeve is annularly grooved or cut away, as shown. at 16, to form a smaller annular portion with a shoulder 17 at v the extremitythereof. Between the shoulder 17 and the flange 15 this sleeve carries one or more p1ates'18 provided with' upstanding lugs or teeth 19, spaced'at regu-j lar intervals along the plates.

the drawings, two such'toothed plates are provided, one '18 spaced substantially around the periphery of the sleeve fromthe.

Then, how- As shown'in other, see Fig. hand one pl: prov 5-1;

with at teeth or lugs and the other with teeth or lugs. These tor secured to the sleeve 13 by s and 20.

The intermediate sleeve 13 is shorter than and loosely surrounds the inner sleeve 1&-

and is provided with slots 21 oi greater length than. the toothed plates 18 and 18 and of sul'licient width to allow these-plates to project therethrough. These slots are of as much greater length than the toothed plates as it is desired to allow the sleeve 13 to slide to insert or withdraw the key into or out of operative position in the keyway of the master gear. At one extremity the sleeve 13 has a thickened. portion 23 the periphery of which is calibrated, as shown in Fig. 2. A portion of the slots 21 may be continued to 'form' recesses in this thickened portion, as shown at 2a in Fig.1, if desired. The outer sleeve 12 is comparatively short in length and surrounds the intermediate sleeve 13 to which it is secured by set screws 25, or othersuitable means. The key 9 is preferably formed integral with the sleeve 12 as is the inturned flange 26, which pro jects inwardly beyond the inner periphery of the sleeve 18. A washer 27 contacts with the flange 26 and is pressed against the flange by the coil spring 28 the other extremity of the spring abutting the shoulder 17 ofthe inner sleeve 14, and the spring 28 is preferably of sufli'cient strength to normally maintain'the flange 26 and consequently the key 9 in advanced position to drive the master gear. The sleeve 12 is provided. at one extremity with the thickened portion 29, the periphery of which is calibrated, as shown in Fig. 2, and the end of this thickened portion 29 is spaced from the adj aeent end of the thickenedportion 23 1" he sleeve 13 by a space sufficient for the ac-' commodation of a plurality of permutation tumbler locking rings 30, four of such permutation. tumbler locking rings being shown herein. Each of the permutation tumbler locking rings .is formed with an internal annular channel 31 and the walls of this channel are notched or cut away at intervals corresponding to the space between the toothed plateslS and 18' as shown at 32 and 32 in .Fig. 3,'tlie notches beingbut slightly wider than the toothed plates so that only when the notches are properly alined with the toothed plates can the permutation'tumbler locking rings be slid thereover. The chan-" nel 31 is of slightly greater width than each tooth or lug of the plates 18 and 18? s=, that when the notched ring has-been 'slido'ver a tooth or lug the ring may be turned to throwthe notch and tooth out of alinement, whereupon the ring cannotbe slid in either direction along the sleeve until the notch alinement with the tooth. The 'peripheryof permutation tumbler locking ring'iscalibrated, as shown in Fig.

2, and it will be a par nt that bya judicious placing of *the notches in the permutation tumbler locking rings relatively to thenumbers upon the periphery any desired combis nation of numbers *canbe arranged, which: must always be brought/into alinement upon the peripheries of the rings at one particular point to place the notches of all the rings in proper alinementito allow the sliding of the permutation tumbler locking 1 f rings and the sleeve 13 carrying these rings along the inner sleeve 14. When the notches and teeth are so. alined the intermediate sleeve 13 maybe moved along the inner sleeve 14 until it strikes the upstanding flange 15 thereon. Since the outer sleeve 12 is firmly secured to the sleeve 13 this sliding movement of the sleeve 13 will also slide the key 9' carried by thesleeve 12 to force it ever, it is desired to lock the engine against operation, the numbers upon the periphery of the permutation tumbler locking rings must-be rotated to the position where all the notches of the several :rings are in proper alinement with the toothed plates 18. and18, and the sleeve 13 and 12 slid along the inner sleeve 14 to withdraw the key 9- from the 'master' gear '2. The .permutationtumb er locking rings are then rotated to move t e notches out of alinement, and the engine is securely locked in an inoperative position,

there bein no longer any connecting means whereby t e operation of the engine valves,

the timing mechanism, etc., may be com trolled; To restore: the engine to operative position, the permutation tumbler locking rings are. again rotated to'bring t'heseveral notches and toothed plates into alinement,

and the sleeves 12 and 13 moved to force the key 9 into the keyway 8 of the master gear.

A further rotation of the permutation tumbler locking. rings will 'then lock theengine in operative position. j

While the illustrated embodiment described herein has been found to be satisfactory, it is to be understood that this embed-i ment .isintended to be merely illustrative and that variouschanges may be made therein Within the scope of the appended claims.

A dial or other suitable mark may be secured'to a part of the mac-.ine adjacent the peripheries of the locking rings so thatthe location of tlIQ'IIOtChQS th reon may: be readilyreferredtoa fixed-point.

Having described the invention, 1 claim 1. In a locking device for engines, the combination with a rotatable shaft;.of the engine and agear .wheel loosely mounted thereon, :of aaaconnecting device secured ,to

imparting rotative motion from said shaft to said gear wheel when it is desired to operate "the engine, said elements being also arranged.

to be moved into position wherein the gear heel will not be rotated on the rotation of said shaft, and a series of manually operated permutation tumbler locking rings cooper- .device in either the operative or inoperative position. a

2'. In a locking device for engines, the combination with the crank-shaft of the engine and the master gear loosely'mounted thereon of a connecting device having elements fixed to said shaft, other elements slid.-'

able into operative engagement with the master gear for imparting rotative motion from said shaft to said gear when in engagement therewith and also slidable into position wherein the master ear will not be rotated onthe'rotation 0 said shaft, and a series of permutation tumbler locking rings cooperating with the'fixed and slidable elements of the connecting device for locking the slidable elements of the c'onnectingdevice in or out of operative engagement with the master gear.

' 3. In a locking device for engines, the combination with'a rotatable shaft of an en- 'gine and a gear wheel loosely mounted thereon, of a connecting device for imparting rotation from said shaft'to' said gear wheel,

said connecting device comprising an inner sleeve secured to the shaft, outersleeves slidable on but rotated by said inner sleeve,

said; Shaft?'aIIdrPIOYidBClZ-With element-S for l 'ating with the connecting device and arranged to lock the elements of the connecting means carried by the outer sleeves adapted 7 tosbe slid into and outofoperative engagement with the gear, and manually operated permutation tumbler locking 'rings carried by the connecting device adapted to lock the outer sleeves in operative engagement with the gear-wheel or in position whereby the gear wheel will not be rotated.

. .4. In a locking device for engines, the

combination with a rotatable shaftof an engine and a gear wheel loosely mounted .there-' on, of a connecting device for imparting rotation from said shaft .to said gear'wheel,

said connecting device comprising an inner sleeve secured to the shaft, outer sleeves slidable on but rotated by said inner sleeve, means carried by the outer sleeves adapted tobe slid into and out of operative engagement with the gear wheel, and locking means said locking" mansfcompx isii ig a plurality of carried by the donnecfingfdeviheadapted -adaptedi td'lobsely fitjwithin the channels of 10- leek the Outer sleg ves in 'Qp'e-rative -enga;gQ- said permutation tumbler locking rings. ment with the gear Wheel 01. in position In testimony-wheroflaflix my signature whereby the gearwhel Will'n'ot be- '1-0ta,ed, in presence of twh ,witns'ses.

inte'rnzflly phan nled permutation gtu'mblr LEWIS KNIEL' rings provided with spaced notches'ihthir Witnesses i(1e walls and -toothed' plats. carriedby said JO N .G. ALEXAN mm,

mnn sleeve; the teethbfsaid plates being JOHN FAUsT. 

